Footnotes

• Contributors URQ is the primary author and submitted the report. TPC was involved in reviewing and the final drafting of the manuscript. PJB was the endoscopist of the case and involved in reviewing and final drafting of the manuscript. Tara Walker, Consultant Histopathologist at Worthing Hospital, University Hospitals Sussex NHS Foundation Trust, served as reporting and advising histopathologist of this case.

• Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

• Competing interests None declared.

• Provenance and peer review Not commissioned; externally peer reviewed.